Potions API/PotionsPackThis mod allows you to create custom potions with specific functions.
POTIONS: Adds api function, potions.register_potion(name, color, exptime, action, expaction)
^Contains no default potions
POTIONSPACK: Adds some cool potions, AntiGravity, AntiGravity II, Speed, Speed II, Confusion, Inversion, and Whatwillthisdo?
^Depends on Potions
https://github.com/Traxie21/potionspack ... master.zip
Screenshots and video (possibly) coming in a day or 3.
License: Code/Textures: WTFPL